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author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2018-02-01 12:50:18 +0100 |
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committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2018-02-02 10:35:30 +0100 |
commit | 6e888894fc043a023731129ae4eb8ae5633e9f97 (patch) | |
tree | 328295722724757118bbed979e73a230f51fb0f3 /src/basic/strv.c | |
parent | 7b1aaf6633cad80c1e59eeedaf60595a3ec1efc5 (diff) | |
download | systemd-6e888894fc043a023731129ae4eb8ae5633e9f97.tar.gz |
basic/strv: add function to insert items at position
Diffstat (limited to 'src/basic/strv.c')
-rw-r--r-- | src/basic/strv.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/basic/strv.c b/src/basic/strv.c index 1103245a36..68e2e874b4 100644 --- a/src/basic/strv.c +++ b/src/basic/strv.c @@ -446,7 +446,7 @@ int strv_push_pair(char ***l, char *a, char *b) { return 0; } -int strv_push_prepend(char ***l, char *value) { +int strv_insert(char ***l, unsigned position, char *value) { char **c; unsigned n, m, i; @@ -454,6 +454,7 @@ int strv_push_prepend(char ***l, char *value) { return 0; n = strv_length(*l); + position = MIN(position, n); /* increase and check for overflow */ m = n + 2; @@ -464,10 +465,12 @@ int strv_push_prepend(char ***l, char *value) { if (!c) return -ENOMEM; - for (i = 0; i < n; i++) + for (i = 0; i < position; i++) + c[i] = (*l)[i]; + c[position] = value; + for (i = position; i < n; i++) c[i+1] = (*l)[i]; - c[0] = value; c[n+1] = NULL; free(*l); |